Hi !!
Where is it appropriate to include an in-text citation?
A. At the end of your paper
B. In the body of your paper
C. In the introduction of your paper
The in-text citation should be placed immediately after the information being cited
so I would say B- in the body of your paper.
or if the information is cited at the end (about the author of the text, for exemple, it will be of course at the end.
hope i understood properly and that it helps :)